Attack of the Tummy Virus!!!

Baby S was the first one down. She is 11 months old and the youngest in the 'big' family. No food would stay in and she was vomitting some green stuff by the afternoon. I rushed home from work on Friday afternoon. My sis in law and I had ealier planned to take the afternoon off to go to the hair salon. Toddler A needed a hair cut especially since her fringe was getting into her eyes. No nice Friday afternoon relaxing at the salon....instead we (as in mom, sis, babies, maid, etc were driven by yours truly to the hospital in a traffic jam that seemed created just to prevent us from getting to our destination!).
It was a private hospital that normally has a good track record.....except on THAT Friday. We finally got there at about 3 pm and straight to the emergency room we went. We saw a Triage nurse (someone who will be the first judge of how serious the case was), then a doctor, then a specialist.....we ALSO had to wait thru room registration, room cleaniong, previous room tenent to leave, etc, etc. Finally got the baby to rest in the single bedded room by 6 pm.
The whole weekend was about going to and from the hospital with a few dashes (for mom and me) to get the week's groceries, gas, and also a little shopping done.
We all got thru the weekend and Baby S was released on Sunday.
Then by Sunday evening.......the maid was down with the virus. Sunday night, brother (father of babies) was next casualty. Then Monday morning, Baby S had another vomiting episode.....
o my!!!
Its now Tuesday and we are not yet thru this Tummy attack.
I also found out that there are other people at work who also suffered similarly. One guy lost 5kgs over a three day attack.
Some people think its the water that has this bacteria. I dont know. I am just trying my hardest to not fall ill.